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Descent in Commentary
Darwin in letters, 1869: Forward on all fronts
Summary
At the start of 1869, Darwin was hard at work making changes and additions for a fifth edition of Origin. He may have resented the interruption to his work on sexual selection and human evolution, but he spent forty-six days on the task. Much of the…
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- … At the start of 1869, Darwin was hard at work making changes and additions for a fifth edition of …
Darwin's in letters, 1873: Animal or vegetable?
Summary
Having laboured for nearly five years on human evolution, sexual selection, and the expression of emotions, Darwin was able to devote 1873 almost exclusively to his beloved plants. He resumed work on the digestive powers of sundews and Venus fly traps, and…
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- … Having laboured for nearly five years on human evolution, sexual selection, and the expression of …
Darwin in letters,1870: Human evolution
Summary
The year 1870 is aptly summarised by the brief entry Darwin made in his journal: ‘The whole of the year at work on the Descent of Man & Selection in relation to Sex’. Descent was the culmination of over three decades of observations and reflections on…
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- … The year 1870 is aptly summarised by the brief entry Darwin made in his journal: ‘The whole of the …
Darwin in letters, 1871: An emptying nest
Summary
The year 1871 was an extremely busy and productive one for Darwin, with the publication in February of his long-awaited book on human evolution, Descent of man. The other main preoccupation of the year was the preparation of his manuscript on expression.…
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- … The year 1871 was an extremely busy and productive one for Darwin, seeing the publication of his …
Sexual selection
Summary
Although natural selection could explain the differences between species, Darwin realised that (other than in the reproductive organs themselves) it could not explain the often marked differences between the males and females of the same species. So what…
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- … Although natural selection could explain the differences between species, Darwin realised that …
